ERGODIC CAPACITY FORMULA OF MIMO-OFDM SYSTEMS UNDER CORRELATED FREQUENCY SELECTIVE RAYLEIGH FADING CHANNELS

被引：0
|
作者：
Pang Jiyong Li Jiandong Zhao Linjing (Broadband Wireless Communications Lab
机构：
来源：
Journal of Electronics(China) | 2007年 / 05期
基金：
中国国家自然科学基金;
关键词：
Multiple-Input Multiple-Output (MIMO); Orthogonal Frequency Division Multiplexing (OFDM); Kronecker product; Channel correlation; Ergodic capacity;
D O I：
暂无
中图分类号：
TN919.72 [无线数据通信];
学科分类号：
0810 ; 081001 ;
摘要：
An explicit formula for the ergodic capacity of Orthogonal Frequency Division Multiplexing (OFDM)-based Multiple-Input Multiple-Output (MIMO) systems under correlated frequency selective Rayleigh channels is derived,by simplifying the channel response matrix in frequency domain into the so-called Kronecker model composed of three kinds of correlations,i.e.multipath tap gain correlation and spatial fading correlations at both transmitter and receiver.The derived formula is very simple and convenient for one to estimate the effects of all three kinds of correlations on MIMO-OFDM capacity.If taps are independent,there is a very simple expression for the ergodic capacity.In case of tap correlation,the capacity formula could be further given in an integral expression.The validity of the new formula is verified and the effects of correlations,delay spread as well as the number of subcarriers on the ergodic capacity are evaluated via Monte Carlo simulations.
引用
收藏
页码：588 / 592
页数：5
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